Drafting instrument.



M. H. STARKE.

DRAFTING INSTRUMENT.

APPLICATION FILED o0'1'.4,-1s09.

Patented Aug. 22, 1911.

Inventor. .Z/zZtm diaries.

' strnments, oi whieh the 'liollowing is PATiTENT OFFICE.

MILTON H. STARKE, OF LOS ANGELES, CALIFORNIA.

DRAFTING INSTRUMEN '1! Specification of Letters Patent.

atented Aug. 22, 1911.

Application filed October 4, 1909. Serial No. 520,884.

To all whom it may concern:

Be it known that l, :liuxros ll. t'l'raunn a citizen of the United States, residing, at Los Angeles, in the eounty oi" Los Angeles and State of ttalil'ornia, have invented new and usel'ul improvements in Drafting in" a spoollieation.

This invention relates more partieularly to a device adapted to form a guide l'or an engrosser in the formation ol the vertical lines oi letters and work of a similar nature and a prime object thereof is to provide a simple instrument whereby the pen used by a dr:rttsman may be accurately guided in the formation of the vertical and inclined lines oi lettering without previously t'orming pencil guide lines.

Another object is to provide an instrument that will maintain the material on which the lettering or other drafting is being done, in a smooth and unwrinkled condition, thus in Sltl'illg uniformity in the completed work.

A further and important; objeet is to provide an instrument that may be manipulated over freshly exeeuted work without danger of smearing or blotting.

it accomplish these objects by means ot' the device deseribed herein and illustrated in the accompanying drawings, in which:

Figure is a perspeetive view ol' the complete instrlunent'. Fig. '2 is an enlarged section taken on line if L of Fig. 1.

Referring more particularly to the drawings 5, (t, designate two parallel slide menr hers pre'terably formed of wood or similar material and being provided with longitudb nally extending grooves 7 which l'urnish a eonvenient hand hold tor the operator besides presenting less 'l'riet ional surt'aee as the instrument is-drawn over the material on which the operator is working. l\lembers 5, (5, are maintained in a parall l relation with each other by means ot a cent rally and trans velsely disposed boil. o and also by a pinrality oi lraiis\u i':-zel y t|i:-;posed guide wir s t) it) preferably six in number three wires at; each end ot the members f1 (I. The outside wires are For the purpose ol guiding the pen ol the, operator when the instrument is in operation, the polished wire eliminating any" l'rietion as the pen is drawn along it. As ,the wires 9, 1d are ol' small diameter and spaced apart they. will oll'er l"no obstruetion to the \ision oi the operator, j thus enabling him to observe the eourse oi' the po nt oi the pen as It glides along the wire. lhe wires E). as 'wlll he observed by an inspection of the lig'tlres oi the drawings, are at a greater height from the under face ot' the instrument than wires it), this is to facilitate the use of small or tinely pointed pens. As the wires f), it), are raised a. con siderable distance above the surface of the material on which the instrument is being used, it: will be observed that the freshly exeeuted work will not be smeared or blotted by the instrument when shilted during the work.

F lidingly mounted on wires 0, 10, and held in detaehable relation thereto are wooden slide li'oelcs 11; 12, whieh act as finger rests when the instrument is in operation and also serve to maintain the material being worked upon in a smooth and stretched condition, this being found to be essential when the operator is lettering or engrossing upon heavy material such as parchment. 'lhese slides are provided on either side thereof with grooves 13, \vhieh register with the wires as clearly shown in Fig. l of the draw inns and may be reeiprmrattal back and forth along the wires to any position that found desirable. The slide blocks 1 l, 12, are illus trated in detaehable relation on the two -inside wires of each set? fl and 10, but it found to be desirable they may be mounted on the outer wire and its adjacent: one it the material is inelined lo wrinkle more than usual. 'hen it is mnweessaiy louse the slide blocks for holding the material in position they may be reversed from the positions shown in the drawings so that they will not eontaet with the surl'aee oi the material.

On one end ot membe ii I have termed a seale l l whieh may be utilized in the spaeinej ol' letters or other tannputations.

in operation the tll\'ll't is pret'erably held by the lel't hand the lirst linger resting on the slide blot-h ll, the members 5, ti, being parallel with the top edge ol' the material so as to bring; the wires f), it), at right an les to the lines on which the l tters are being made. All perpendicular lines may be readily I'ormed by allowing the pen to glide along the outside wire 5) or it). the oblique lines together with whatever relouehingthat. may be necessary to make a perl'eet; letter being made free hand, thus a page of Old English or other type or letter may be rapidly and neatly executed, all the perpendicular lines of the letters being absolutely par allel to each other.

It will be observed from the foregoing description that I have provided a novel drafting instrument, wl'iereb'y the labor and time necessary to construct guide lines for lettering is eliminated, and which will securely hold the material in position during the formation of the letters and which may be moved over freshly executed portions without danger of blotting.

llaving described my intention what I claim as new and desire to secure by Letters Patent is:-

l. A. drafting instrument, comprising a pair of rectangular slide members rigidly secured in parallel relation to each other, a. plurality of wires connecting said members at each end thcreof,-and a material holding means mounted on said wires, said means adapted to be forced into contact with the material and hold the same in a stretched condition while the instrument is in operation.

2. A drafting instrument, comprising a pair of slide members secured in rigid relation to each other, a pen guiding means connected to both members, and a material holding means slidably mounted on the guiding means, said means adapted to be forced into contact wlth the material and maintain the same in a stretched condition while the instrument .is in operation.

3. A drafting instrument, comprisingtwo slide members rigidly secured together, a plurality of wires connecting the adjacent ends of both membcrS and a material holding slide detachably mounted on the wires at each end of the members.

4. A drafting instrument, comprising a pair of slide members secured in rigid relation to each other, a scale on one of said members, a plurality of guide wires connecting the adjacent ends of both members, and

a detachable holding slide mounted on the wires at each end of the slide members.

A drafting instrument, comprising a pair of slide members. spaced apart and secured in rigid parallel relation, a plurality of rigid wires connecting said members, and material holding slides slidably mounted on said wires, saidslides adapted to forced into contact withthe material when the instrument is being operated.

6. A drafting instrument, comprising a pair of slide members spaced apart and secured in rigid parallel relation, an extension haying graduation marks thereon formed on one member, and a plurality of wires connectingsaid members.

7. A drafting instrument, comprising a pair of rectangular slide members rigidly secured in parallel relation to each other, said members adapted to slide along the drawing surface endwise, a plurality of rigid wires connecting said members at each end thereof, said wires adapted to actguides in the formation of vertical lines, and material holding slides slidably mounted on said wires and adapted to contact with the material when operating the instrument.

S. A drafting instrument, comprising a substantially rectangular rigid frame having two of its oppositely disposed ends open, and a plurality of pen guiding wires mounted in said frame, said wires providing means to guide a drafting instrument in.

M. H. STARKE.

lVitnesses EDMUND A. SrnAUsn, ETHEL COLEMAN. 

